Click here for the Spanish Version: https://youtu.be/iKwFI12lw7s

In This Unit of Study…

Students will model the action of joining to represent addition and the action of separating to represent subtraction. They will solve contextual word problems (add to/take from result unknown) involving familiar scenarios with sums up to 10 and differences up to 10. By the end, students will be able to explain the strategies they used to solve addition and subtraction problems by using spoken words, concrete, and pictorial models, and expressions/equations.

B.E.S.T. Benchmarks:

  • MA.K.NSO.2.1 Recite the number names to 100 80 by ones and tens. Starting at a given number, count forward within 100 80 and backward within 20. 
  • MA.K.NSO.3.1 Explore addition of two whole numbers from 0 to 10, and related subtraction facts. 
  • MA.K.NSO.3.2 Add two one-digit whole numbers with sums from 0 to 10 and subtract using related facts with procedural reliability. 
  • MA.K.AR.1.3 Solve addition and subtraction real-world problems using objects, drawings, or equations to represent the problem. 

Key Concepts:

  • Fluency: Count to 80 by ones and tens 
  • Joining (add to result unknown problems) 
  • Separating (take from result unknown problems) 
  • Connecting joining and separating